With s/c nas and nab.

Crankcase Vent To Intake Manifold Tube – Mopar (4854265)

The Mopar Crankcase Vent To Intake Manifold Tube (4854265) is a Genuine OEM emissions and ventilation component engineered to route crankcase vapors from the engine’s ventilation system into the intake manifold on compatible Chrysler, Dodge, Jeep, and Ram vehicles. This tube is a critical part of the Positive Crankcase Ventilation (PCV) system, helping regulate internal engine pressure while allowing controlled reintroduction of vapors into the combustion process. Manufactured to strict Mopar factory standards, it ensures precise fitment and dependable sealing performance.

Constructed from heat-resistant molded rubber or reinforced composite tubing (application dependent), this vent tube is designed to withstand constant exposure to oil vapor, engine heat, and vacuum pressure. The material resists softening, cracking, and collapse over time, maintaining consistent internal diameter and airflow characteristics. Molded bends and formed ends are engineered to match factory routing and connection points precisely.

The 4854265 crankcase vent to intake manifold tube is developed as a vehicle-specific direct-fit component, matching original length, curvature, inner diameter, and connector geometry. Maintaining OEM dimensional accuracy is essential to ensure proper vapor flow, vacuum balance, and secure attachment at both the crankcase and intake manifold ports. Aftermarket hoses that deviate from factory specifications may cause vacuum leaks, poor idle quality, or emissions system faults.

For professional technicians, installing a Genuine Mopar vent tube ensures compliance with manufacturer PCV system standards during engine service or emissions repairs. For experienced DIY vehicle owners, selecting the OEM tube eliminates compatibility concerns and restores factory-designed ventilation routing without modification.

A properly functioning crankcase vent tube supports stable engine idle, controlled crankcase pressure, and reduced oil contamination. Replacing a brittle, leaking, or collapsed tube promptly helps prevent vacuum leaks and maintain efficient engine performance.

• Genuine Mopar OEM crankcase vent tube

• Heat-resistant reinforced rubber or composite construction

• Designed for proper PCV vapor routing

• Precision-molded factory routing geometry

• Engineered for secure, leak-resistant connections

• Vehicle-specific direct-fit configuration

If you are restoring proper crankcase ventilation or replacing a deteriorated PCV hose, the Mopar Crankcase Vent To Intake Manifold Tube (4854265) delivers factory-accurate fitment, durable construction, and OEM-engineered emissions system reliability for your vehicle.

With s/c nas and nab.

Crankcase Vent To Intake Manifold Tube – Mopar (4854265)

The Mopar Crankcase Vent To Intake Manifold Tube (4854265) is a Genuine OEM emissions and ventilation component engineered to route crankcase vapors from the engine’s ventilation system into the intake manifold on compatible Chrysler, Dodge, Jeep, and Ram vehicles. This tube is a critical part of the Positive Crankcase Ventilation (PCV) system, helping regulate internal engine pressure while allowing controlled reintroduction of vapors into the combustion process. Manufactured to strict Mopar factory standards, it ensures precise fitment and dependable sealing performance.

Constructed from heat-resistant molded rubber or reinforced composite tubing (application dependent), this vent tube is designed to withstand constant exposure to oil vapor, engine heat, and vacuum pressure. The material resists softening, cracking, and collapse over time, maintaining consistent internal diameter and airflow characteristics. Molded bends and formed ends are engineered to match factory routing and connection points precisely.

The 4854265 crankcase vent to intake manifold tube is developed as a vehicle-specific direct-fit component, matching original length, curvature, inner diameter, and connector geometry. Maintaining OEM dimensional accuracy is essential to ensure proper vapor flow, vacuum balance, and secure attachment at both the crankcase and intake manifold ports. Aftermarket hoses that deviate from factory specifications may cause vacuum leaks, poor idle quality, or emissions system faults.

For professional technicians, installing a Genuine Mopar vent tube ensures compliance with manufacturer PCV system standards during engine service or emissions repairs. For experienced DIY vehicle owners, selecting the OEM tube eliminates compatibility concerns and restores factory-designed ventilation routing without modification.

A properly functioning crankcase vent tube supports stable engine idle, controlled crankcase pressure, and reduced oil contamination. Replacing a brittle, leaking, or collapsed tube promptly helps prevent vacuum leaks and maintain efficient engine performance.

• Genuine Mopar OEM crankcase vent tube

• Heat-resistant reinforced rubber or composite construction

• Designed for proper PCV vapor routing

• Precision-molded factory routing geometry

• Engineered for secure, leak-resistant connections

• Vehicle-specific direct-fit configuration

If you are restoring proper crankcase ventilation or replacing a deteriorated PCV hose, the Mopar Crankcase Vent To Intake Manifold Tube (4854265) delivers factory-accurate fitment, durable construction, and OEM-engineered emissions system reliability for your vehicle.